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Introduction to Agustinia Dinosaur

Agustinia is a genus of herbivorous dinosaur from the Early Cretaceous period (130 million years ago) found in South America, particularly in modern-day Argentina. Agustinia is one of the most complete fossils that have been discovered, giving researchers a rare glimpse into this dinosaur’s life and behavior. The most notable feature of Agustinia is its large spine, which is believed to have been used to protect itself against predators or to give it an advantage when running and climbing. Agustinia is one of the longest-lived dinosaurs, having lived for over 40 million years. Agustinia is one of the few dinosaurs that is still alive today, with its modern-day relative, the horned lizard, being seen in South American deserts.

Anatomy and Physical Appearance

Agustinia was a large, herbivorous dinosaur, around 5 meters (16 feet) long and standing at over 1.7 meters (5.6 feet) tall at the hip. It had a light, slender body and short, two-toed feet. Its head and neck were long, with peg-like teeth suitable for cropping vegetation and scraping bark from trees. It had two large horns on its head, similar to those of modern-day chameleons, which may have been used for defensive purposes, along with its thick skin. Agustinia also had a large, curved spine, running along its back, which is thought to have been used as protection against predators or to give it an advantage when running and climbing.


Agustinia’s long neck and legs likely allowed it to move with some agility, although it is believed to have mainly moved slowly. Its two-toed feet may have helped it to move quickly and effectively on soft ground. It is also possible that its horns were used as levers when climbing and running, although this is not yet proven.

Habits and Diet

Agustinia is believed to have been a solitary animal, living and feeding alone. It is thought to have fed mainly on vegetation, such as leaves and small plants, but its large spine may have enabled it to reach foliage in trees and on cliffs. Its peg-like teeth were likely able to tear and pluck small amounts of vegetation for sustenance.

Agustinia two

Social Habits

Agustinia is believed to have been a solitary animal, living and feeding alone. There is no evidence to suggest that these animals travelled in herds, or had any organized social structuring, although they may have been able to recognize each other by sight or smell.


It is unknown how Agustinia reproduced, but it is likely that they laid eggs in shallow nests, like other large dinosaurs. It is also likely that the eggs were incubated by the heat of the sun, although little else is known about their reproductive habits.


Agustinia became extinct around 66 million years ago during the Cretaceous-Paleogene extinction event. It is one of the only dinosaurs to still have living relatives as its modern-day descendant, the horned lizard, is still found in South American deserts.


Agustinia is a fascinating dinosaur that has been preserved in fossils for over 130 million years. Although much of its behavior and lifestyle is still uncertain, its long neck, large spine, and peg-like teeth give us a glimpse into the world of this long-extinct creature. Its modern-day relatives, the horned lizard, provide us with a glimpse into the life of Agustinia and its time on earth.

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